Warning alarm - Service Required

[milehighbu]

I have a 2012 22 MXZ I just purchased last March. I have only been able to use it a couple times due to all the rain we are getting in Denver. Regardless, I am getting a "Service Required" warning message every 3 minutes or so. I can turn the alarm off easily enough but it is very annoying as you can imagine. I get the following code in the inactive faults section (no faults in the active section) of Maliview.

Malibu SPN:4239 FMI:1 028FuelTrimLong

I have looked for this specific code in the Indmar diagnostics guide but don't find this exact wording. I did find the following code which suggests a bad O2 sensor.

SPN 4239 FMI 1 Adaptive Learn Bank 2 Low (Gasoline)

Can anyone provide some additional insight before I take my boat back to the dealer? It's a bit of a drive so I would love to correct it myself if possible.

[Wayne]

That's the same fault I had when the plugs for the front and rear O2 sensors were swapped. Check the tags on the wire harness going to each O2 sensor. Bank 1 will be on the same side as your steering wheel (I think. I'm staring to forget things lately). Regardless you can check all 4 sensors. There are little silver or white tags on the harness marking upstream and downstream sensors for each cylinder bank. Should be easy to see once you know what to look for.

If that's not it I would suspect a bad sensor. For diagnosing that it's best for a marine tech to monitor the sensor output while driving the boat to really see what's going on.

[ekass19]

On 6/18/2015 at 11:56 AM, milehighbu said:

I have a 2012 22 MXZ I just purchased last March. I have only been able to use it a couple times due to all the rain we are getting in Denver. Regardless, I am getting a "Service Required" warning message every 3 minutes or so. I can turn the alarm off easily enough but it is very annoying as you can imagine. I get the following code in the inactive faults section (no faults in the active section) of Maliview.

Malibu SPN:4239 FMI:1 028FuelTrimLong

I have looked for this specific code in the Indmar diagnostics guide but don't find this exact wording. I did find the following code which suggests a bad O2 sensor.

SPN 4239 FMI 1 Adaptive Learn Bank 2 Low (Gasoline)

Can anyone provide some additional insight before I take my boat back to the dealer? It's a bit of a drive so I would love to correct it myself if possible.

Did you ever figure out what the problem was I’m having the same problem on mine 

[Saltydog]

I’ve had the same fault on my 2012 247. Mine only alarms once every 5th engine start or so. Ended up buying a Diacom to read and clear. It’s a general fault if memory serves. Very non descript in the manual. Through experimentation I believe I have a bad starter relay. After I hit start and it sometimes doesn’t turn over it throws the alarm on the next startup. Or maybe it’s just a random fault Indmar put there to mess with everyone because it seems most folks have had it.